Crux No. 2 - Incorporating Stigmata No. 23, 1986
(Crux, Thomas R. Adams, Paris , Texas 
Source: Archives For the Unexplained (AFU),
Norrköping, Sweden 
The whole article:
“In response to his Freedom of Information Act request
for information on UFOs, Ray W. Boeche of the Fortean 
Research  Center 
in Lincoln , Nebraska 1985. A  number of foreign
reports were included, as well as several references to Project Moon Dust,
which other sources have described as the retrieval of fallen spacecraft or
space debris of unknown origin (some suggest that UFOs easily fall within the
purview of this project). One of the documents Boeche received is identified as
from the Joint Chiefs of Staff Message Center and is concerned with events in Peru 
Source reported that a UFO was spotted on two
different occasions near Peruvian Air Force (FAP) base in southern Peru 
The document then provides details:
Source told RD about the spotting of an unidentified
flying object in the vicinity of Mariano Melgar Air Base, La Joya, Peru 
Source stated that on 9 May, while a group of FAP
officers were in formation at Mariano Melgar, they spotted a UFO that was round
in shape, hovering near the airfield. The air commander scrambled an SU-22
aircraft to make an intercept. The pilot, according to a third party,
intercepted the vehicle and fired upon it at very close range without causing
any apparent damage. The pilot tried to make a second pass on the vehicle, but
the UFO out-ran the SU-22.
The second sighting was during hours of darkness. The
vehicle was lighted. Again an SU-22 was scrambled, but the vehicle out-ran the
aircraft.”
NOTE: The U.S. Department of Defense (DoD) provides
the wrong date for the La Joya UFO incident, according to Leslie Kean’s book, UFOs: Generals, Pilots and Government
Officials Go On the Record (Google Books):
The correct date of the first UFO incident is 11 April
1980. It was Lieutenant (later Air Force Commander) Oscar Alfonso Santa Maria Huertas who was
engaged in a dogfight with the UFO over 
the La Joya/Mariano Melgar Air Base,Arequipa, Peru.  Hue 
the La Joya/Mariano Melgar Air Base,
Related posts:
Commander Oscar Alfonso Santa Maria Huertas,
Peruvian Air Force (Ret.) (youtube.com image)
Satellite
photo of Arequipa , Peru 
(tageo.com
photo)